Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Arthoniomycetes O.E. Erikss. & Winka (1997)
       Order Arthoniales Henssen ex D.Hawksw. & O.E. Erikss. (1986)
         Family Arthoniaceae Rchb. (1841)
           01 Genus Amazonomyces Bat. & Cavalc. (1964)
           02 Genus Arthonia Ach. (1806), nom. cons.
           03 Genus Coniarthonia Grube (2001)
           04 Genus Arthothelium A.Massal. (1852)
           05 Genus Cryptothecia Stirt. (1876), nom. cons.
           06 Genus Eremothecella Syd. & P.Syd. (1917)
           07 ?Genus Gymnographoidea Fink (1930)
           08 Genus Paradoxomyces Matzer (1996)
           09 Genus Sagenidiopsis R.W. Rogers & Hafellner (1987)
           10 Genus Sporostigma Grube (2001)
           11 Genus Stirtonia A.L.Sm. (1926), nom. cons.